茶皂素提取和纯化工艺研究

以贵州省优势资源油茶利用后产生的油茶籽和废弃茶籽饼为主要原料,从中提取表面活性剂茶皂素,介绍了目前茶皂素的提取和纯化工艺,并进行了一定对比,以对生产实践进行指导。     

油酸的生产工艺及应用

油酸是一种重要的精细化工产品,其原料可以从动、植物油脂中得到,广泛应用于各个领域。本文主要对油酸进行了分类,并对油酸的生产技术和在表面活性剂中的应用进行了综述,对高纯油酸和普通油酸在表面活性剂方面的性能进行了比较。结果表明,油酸是一种绿色环保的原料,符合绿色化工的发展方向;随着油酸生产和应用技术的推广,油酸必将成为一种可持续发展的表面活性剂。     

一种天然非离子表面活性剂茶皂素的制备与应用

茶皂素是一种从山茶科植物中发现的天然非离子性表面活性剂,大部分茶皂素是从油茶饼中提取的,采用水提或者超声辅助乙醇结合丙酮沉淀法来进行茶皂素的工业化的提取和纯化。茶皂素不仅能解吸污染土壤中的重金属,还能在彩妆方面、医药行业有很大的应用     

天然非离子表面活性剂茶皂素性能的研究

为利用茶皂素研制洗涤剂,实验对茶皂素溶液的起泡力,泡沫稳定性及去污能力进行了测定。同时,研制了复配型茶皂素洗涤剂,并检验了该洗涤剂的洗涤效果。结果表明,与人工合成的表面活性剂比较,茶皂素溶液的起泡力较弱,但其泡沫稳定性极强;茶皂素单独使用时,去污力不如合成表面活性剂;当与合成表面活性剂复配后,去污力显著增强。     

茶皂素表面活性剂及其应用研究进展

本对茶皂素的表面活性剂构型、表面张力、临界胶束浓度、ＨＬＢ值，接触角、起泡力等表面活性剂理论体系的研究进展作一综述，并详述了茶皂素表面活性剂在工业上的应用，同时对可能利用的途径进行了探讨。     

壳聚糖复合絮凝剂在茶皂素提取工艺中的应用

壳聚糖复合絮凝剂在茶皂素提取工艺中的应用＊该研究为江西省科委资助项目部分内容茶皂素是从山茶科植物油茶种子中提取出来的一类复杂的糖甙化合物。它是一种优良的天然非离子型表面活性剂,具有较强的发泡、乳化、分散、润湿、渗透功能,并且具有消炎、镇痛、杀菌、抗肿...     

茶皂素的提取及其在洗发香波中的应用

以油茶榨油后产生的茶籽饼为主要原料,从中提取表面活性剂茶皂素,选择水提-醇萃改进新工艺法,通过单因素实验,考察了浸提温度、浸提时间、料液比等因素对茶皂素产量的影响。采用正交实验L_9(3³)优化茶皂素的最佳提取工艺条件,同时,研究了茶皂素在洗发香波中的应用。结果表明,茶皂素最佳提取工艺条件为浸提温度90℃、浸提时间2.0 h,液料比1:6,此时茶皂素产量将达到8.5%。茶皂素洗发香波应用证明,加茶皂素的洗发香波与不加茶皂素相比,具有发泡性能强、使发质更光泽、更柔顺等优势。     

茶皂素的提取及其在洗发香波中的应用

以油茶榨油后产生的茶籽饼为主要原料,从中提取表面活性剂茶皂素,选择水提-醇萃改进新工艺法,通过单因素实验,考察了浸提温度、浸提时间、料液比等因素对茶皂素产量的影响。采用正交实验L_9(3~3)优化茶皂素的最佳提取工艺条件,同时,研究了茶皂素在洗发香波中的应用。结果表明,茶皂素最佳提取工艺条件为浸提温度90℃、浸提时间2.0 h,液料比1:6,此时茶皂素产量将达到8.5%。茶皂素洗发香波应用证明,加茶皂素的洗发香波与不加茶皂素相比,具有发泡性能强、使发质更光泽、更柔顺等优势。     

天然茶皂素的泡沫性能研究

本文对天然表面活性剂茶皂素的泡沫性能用不同的测定方法和多种表面活性剂对比进行研究,说明茶皂素是一种发泡性较好泡沫稳定性优良的发泡剂.     

高纯茶皂素的提取技术及应用研究

利用贵州优势林业资源油茶的种植发展资料,介绍以油茶籽和废弃茶籽饼为主要原料,提取绿色环保型农药高纯茶皂素的工艺原理及应用。     

从油茶果渣、籽仁和脚料中提取茶皂素及回收脂肪酸的研究

对油茶果的深度开发作了较为详尽的研究：在尽可能提高茶油产率的同时，对榨取茶油以后的粕饼或渣，籽仁以及精制茶油后的脚料等物进行再提取或回收，从中又可得到能增值的精细化学的绿色产品——茶皂素和脂肪酸。     

A novel process for extraction of tea oil from Camellia oleifera seed kernels by combination of microwave puffing and aqueous enzymatic oil extraction

The objective of this study was to extract the oil from Camellia oleifera seed kernels by aqueous enzymatic oil extraction (AEOE). We describe a novel process for extraction of tea oil preceded by tea saponin extraction from C. oleifera seed kernels. The extraction efficiency obtained with microwave‐assisted extraction (MAE) is very high, which the recovery yield is up to 83% in 30 s and the saponins in camellia seed kernels can be completely removed by the second MAE. Moreover, an important step in the process development has been the pretreatment by microwave puffing of camellia seed kernel residues followed by AEOE increased oil extraction yield from 53% to 95%, which will is comparable to hexane oil extraction yields from plant materials.     

茶籽皂素的提取及应用研究

介绍了茶籽皂素在农业、医药、日用化工、养殖、建筑等领域的应用研究,重点综述了近些年从茶籽饼中提取茶皂素的各种提取工艺及其特点,并就茶皂素目前的生产和应用情况提出了一些看法和急需解决的问题。     

茶皂素提取新工艺研究

介绍水提法和醇提法从茶饼粕中提取茶皂素的传统工艺,指出茶皂素水解、杂质去除及滤液浓缩是水提法工业化生产茶皂素的三个关键问题。发明了一种新的水提法,浸提前用化学处理抑制、消除茶饼粕中水解酶的活性,有效抑制茶皂素的水解;用纳滤膜浓缩澄清的浸提液,减少废弃相中茶皂素含量;高速离心分离,有效除去浸提液中的糖类、蛋白质、淀粉、果胶等杂质。从 2个实例来看:该工艺过程简单、设备投资和生产成本低、能耗少,所得茶皂素产品呈淡黄色,纯度超过80%,得率超过 70%。     

Optimization of Microwave-Assisted Extraction of Tea Saponin and Its Application on Cleaning of Historic Silks

Microwave-assisted extraction (MAE) was utilized to extract tea saponin from oil-tea camellia seed cake. The factors influencing the extraction efficiency were studied, including the effects of microwave power, irradiation duration, temperature, ratio of solvent to material and aqueous ethanol concentration. By systematic orthogonal experiments, the optimal extraction technology was determined. Compared with a conventional extraction method, MAE shows great advantages with the extraction time reduced from 6 h to 4 min, 50 % organic solvent saved and about 14 % extraction yield enhanced. Fourier transform infrared spectroscopy testing and high performance liquid chromatography analysis proved that the extracted resultants were tea saponin with similar compounds as a standard tea saponin. The extracted tea saponin was applied on the cleaning of historic silks and showed good removal effect on the stains. This work provides useful information for fully use of oil-tea camellia seed cake and new applications of tea saponin at the protection of historic textiles.     

油茶资源利用及产业发展现状

油茶是世界四大木本油料植物之一，也是我国特有的优质木本油料资源。油茶籽油是一种高档植物油，具有丰富的营养物质和保健功效成分。为了促进油茶资源的合理配置，延伸油茶产业链，提高综合效益，本文对油茶资源的分布和总量进行概述；对油茶籽油、油茶果壳、油茶饼粕的功能成分及利用现状进行分析；纵观油茶产业发展历程总结出油茶产业可推广经验，指出产业在良种培育、原料采收及储存、产品研发、企业生产经营及品牌建设过程中存在的问题；并结合产业未来发展的趋势对出现的问题提出可供参考的对策与建议。     

果壳生物质热解特性与动力学

采用热重分析仪对林产果壳生物质（澳洲坚果壳、油茶壳、核桃壳）热解特性进行了研究,利用分布活化能模型（DAEM）分析了热解动力学。热解特性研究表明：油茶壳最大失重速率最小,热解起始温度、结束温度、最大失重速率温度均低于澳洲坚果壳和核桃壳;澳洲坚果壳和核桃壳热解特征值近似;3种果壳生物质随升温速率的增加,热解过程向高温区转移。DAEM研究表明：DAEM适用于3种果壳生物质的热解动力学研究,相关系数R²在0.914~0.999之间;澳洲坚果壳热解活化能83.91~211.86 kJ/mol,油茶壳热解活化能68.64~244.49 kJ/mol,核桃壳热解活化能98.69~267.75 kJ/mol;随转化率的增加,3种果壳生物质活化能呈现相同的变化趋势,但变化幅度不同。     

天然高分子表面活性剂的研究进展

概述了淀粉、纤维素和壳聚糖类天然高分子表面活性剂的研究概况,并展望了其未来发展趋势。通过对天然高分子表面活性剂的介绍,使人们对高分子表面活性剂,尤其是绿色高分子表面活性剂有更多的认识和了解。天然高分子表面活性剂,具有原料可再生、无毒、无污染、易生物降解特点,可广泛应用于食品工业、农业、洗涤剂、化妆品等领域,具有广阔的应用前景。因此以天然高分子为原料的绿色高分子表面活性剂已成为表面活性剂发展的一个重要方向。     

Changes of constituents and activity to apoptosis and cell cycle during fermentation of tea

Tea is believed to be beneficial for health, and the effects of the fermentation process on its contributions to apoptosis and cell cycle arrest of gastric cancer cells have not been completely investigated. In this study, the chemical components in green tea, black tea and pu-erh tea aqueous extracts were analyzed and compared. The polysaccharide and caffeine levels were substantially higher in the fermented black tea and pu-erh tea, while the polyphenol level was higher in the unfermented green tea. Hence, a treatment of tea aqueous extract and the components, which are emerging as promising anticancer agents, were pursued to determine whether this treatment could lead to enhance apoptosis and cell cycle arrest. In the human gastric cancer cell line SGC-7901, the cell viability and flow cytometry analysis for apoptotic cells indicated effects in a dose-dependent inhibition manner for the three tea treatment groups. The apoptosis rates were found to be elevated after 48 h of treatment with 31.2, 125, and 500 μg/mL of green tea extract, the higher catechins content may be involved in the mechanism. Cell cycle was arrested in S phase in the fermented black tea and pu-erh tea, and the populations were significantly decreased in G2/M phases, possibly due to the oxidation of tea polyphenols, which causes an increase of theabrownins. CCC-HEL-1 normal cells were not sensitive to tea extract. These findings suggest that the fermentation process causes changes of the compounds which might be involved in the changes of cell proliferation inhibition, apoptosis induction and cell cycle arrest.